<template>
  <div class="article-detail__container">
    <!-- Header 区域 -->
    <van-nav-bar fixed title="文章详情" left-arrow @click-left="$router.back()" />

    <!-- 文章信息区域 -->
    <div class="article-container">
      <!-- 文章标题 -->
      <h1 class="art-title">{{ artObj.title }}</h1>

      <!-- 用户信息 -->
      <van-cell center :title="artObj.aut_name" :label="$timeAgo(artObj.pubdate)">
        <template #icon>
          <img :src="artObj.aut_photo" :alt="artObj.aut_name" class="avatar">
        </template>
        <template #default>
          <div>
            <van-button type="info" size="mini" v-if="artObj.is_followed"
              @click="followOrUnfollowFn">已关注</van-button>
            <van-button icon="plus" type="info" size="mini" plain v-else
              @click="followOrUnfollowFn">关注</van-button>
          </div>
        </template>
      </van-cell>

      <!-- 分割线 -->
      <van-divider></van-divider>

      <!-- 文章内容 -->
      <div class="art-content" v-html="artObj.content"></div>

      <!-- 分割线 -->
      <van-divider>End</van-divider>

      <!-- 点赞 -->
      <div class="like-box">
        <van-button icon="good-job" type="danger" size="small" v-if="artObj.attitude == 1"
          @click="loveFn(false)">已点赞
        </van-button>
        <van-button icon="good-job-o" type="danger" plain size="small" v-else @click="loveFn(true)">
          点赞
        </van-button>
      </div>
    </div>
    <!-- 评论组件 -->
    <comment-list />
  </div>
</template>

<script>
import { getArticleDetailAPI, followAutAPI, unfollowAutAPI, articleLikeAPI, articleDisLikeAPI } from '@/api/article'
import CommentList from './CommentList.vue'
export default {
  name: 'ArticleDetail',
  data () {
    return {
      artObj: {} // 文章对象
    }
  },
  async created () {
    const resp = await getArticleDetailAPI({ id: this.$route.query.id })
    this.artObj = resp.data.data
  },
  methods: {
    // 关注
    async followOrUnfollowFn () {
      try {
        // 1.同步到后台
        this.artObj.is_followed ? await unfollowAutAPI({
          autid: this.artObj.aut_id
        }) : await followAutAPI({
          autid: this.artObj.aut_id
        })
        this.$toast.success(this.artObj.is_followed ? '取关成功' : '关注成功')
        // 2. 同步到vue变量中
        this.artObj.is_followed = !this.artObj.is_followed
      } catch (e) {
        this.$toast.success(this.artObj.is_followed ? '取关出错' : '关注出错')
      }
    },
    // 点赞
    async loveFn (bool) {
      if (bool === true) { // 用户点在了点赞按钮上
        await articleLikeAPI({ target: this.artObj.art_id })
        this.artObj.attitude = 1
      } else { // 用户点在了已点赞按钮上
        await articleDisLikeAPI({ artId: this.artObj.art_id })
        this.artObj.attitude = -1
      }
    }
  },
  components: {
    CommentList
  }
}
</script>

<style scoped lang="less">
.article-container {
  padding: 10px;
  margin-top: 46px;
}
.art-title {
  font-size: 16px;
  font-weight: bold;
  margin: 10px 0;
}

.art-content {
  font-size: 12px;
  line-height: 24px;
  width: 100%;
  overflow-x: scroll;
  word-break: break-all;
  /deep/ img {
    width: 100%;
  }
  /deep/ pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.van-cell {
  padding: 5px 0;
  &::after {
    display: none;
  }
}

.avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #f8f8f8;
  margin-right: 5px;
  border: none;
}

.like-box {
  display: flex;
  justify-content: center;
}
</style>
